Ozone therapy effects on biomarkers and lung function in asthma

BACKGROUND: The relationship and behavior of serum immunoglobulin E (IgE) level, peripheral blood mononuclear cell (PBMC) human leukocyte antigen DR (HLA-DR) expression and erythrocyte glutathione antioxidant pathway in asthma patients treated with systemic ozone therapy have not been studied before. METHODS: Asthma patients were treated about 1 year with three cycles (5 or 6 months each) with three different ozone therapy protocols. Ozone major autohemotherapy (MAHT) was applied at doses of 4 and 8 mg, 15 sessions each cycle; and ozone rectal insufflations (RI) at a dose of 10 mg, 20 sessions each cycle. Serum IgE, HLA-DR expression in PBMC and biomarkers for antioxidant pathway were measured before and at the end of each cycle. Lung function and symptoms test were recorded at the beginning and after the third cycle. RESULTS: IgE and HLA-DR decreased with the three types of treatments, while increments in reduced glutathione, glutathione peroxidase, glutation reductase and glutathione S-transferase were achieved with all treatments. Lung function and symptoms test were markedly improved. However, in all parameters the best response was obtained in the order: MAHT at 8 mg better than MAHT at 4 mg better than RI at 10 mg. Before ozone treatment, glutathione antioxidant parameters were under the normal reference values, suggesting the occurrence of oxidative stress associated with atopic asthma. CONCLUSIONS: This study demonstrates the effectiveness of ozone therapy in reducing IgE and inflammatory mediators along with the induction of antioxidant elements. The study raises the role of systemic ozone therapy in atopic asthma by means of its immunomodulatory and oxidative stress regulation properties.     

硫氧还原蛋白与氧化应激在胃癌中表达水平和意义

目的探讨氧化应激和抗氧化蛋白-硫氧还原蛋白(Trx)在胃癌发生发展中的作用。方法采用紫外分光光度法测定胃癌患者(n=48)和健康自愿者(n=30)血浆中腺苷脱氨酶(ADA)、谷胱苷肽过氧化物酶(GPX)、超氧化物歧化酶(SOD)、晚期蛋白氧化产物(AOPP)的表达水平,采用酶联免疫吸附法(ELISA)测定硫氧还原蛋白的表达水平;采用荧光定量RT-PCR法测定胃癌组织(n=68)和其癌周正常组织中Trx mRNA的表达水平。结果胃癌组血浆ADA、AOPP的表达水平高于对照组(P<0.05),GPX表达明显低于对照组(P<0.05),SOD在两组间未见明显差异。胃癌组血浆Trx表达水平明显高于健康对照组(P<0.05),Trx表达水平与远处转移有关(P<0.05)。胃癌与正常胃组织Trx mRNA水平比较差异具有统计学意义(P<0.05)。结论胃癌患者存在过高的氧化应激水平,胃癌组织Trx mRNA相对表达值高,血浆硫氧还原蛋白高表达且与肿瘤远处转移有关。     

超纯水对维持性血液透析患者氧化应激和炎症水平的影响

目的 研究超纯水对维持性血液透析患者氧化应激和炎症水平的影响.方法 对36例符合条件的患者采用重复测量自身对照的方法,测定在使用超纯水前、后6个月及12个月时血清晚期氧化蛋白产物(AOPP)、丙二醛(MDA)、谷胱甘肽过氧化物酶(GSH-Px)、髓过氧化物酶(MPO)、白蛋白(AIb)、C-反应蛋白(CRP)、新喋呤、肿瘤坏死因子α(TNF-α)、白细胞介素6(IL-6)水平.结果 改进水处理系统后,透析用水的细菌和内毒素含量明显下降(P＜0.01).随访一年中,各项检测指标在不同时间点的差异均有统计学意义(P＜0.05);6个月时血清AOPP、MDA、GSH.Px、Alb、CRP、新喋呤、TNF-α水平较使用超纯水前明显改善(P＜0.05),且MPO有非常显著的差异(P＜0.01);12个月时IL-6(P＜0.05)、MDA(P＜0.01)水平进一步下降.相关分析显示血清MPO活性与AOPP及CRP水平在改用超纯水前后均呈正相关关系.结论 改用超纯水后患者的氧化应激和炎症水平显著降低,且MPO也许可以同时提示氧化应激和炎症水平.     

还原型谷胱甘肽对糖尿病酮症酸中毒患者氧化应激的影响

目的: 探讨还原型谷胱甘肽(reduced glutathione,GSH)治疗糖尿病酮症酸中毒(diabetic ketoacidosis,DKA)患者时对氧化应激的影响。方法: 将47例DKA患者分为常规治疗组23例,加用GSH治疗组24例,检测2组患者治疗前后血超氧化物歧化酶(superoxide dismutase,SOD)活性、总抗氧化能力(total antioxidant capacity,TAC)、丙二醛(malondialdehyde,MDA)和晚期蛋白氧化产物(advanced oxidation protein products,AOPP)含量。结果: DKA患者应用GSH治疗后SOD和TAC均显著升高,且与常规治疗组治疗后差异均有统计学意义(P < 0.01),而治疗后AOPP较则明显降低,与常规治疗组治疗后差异有统计学意义(P < 0.01)。结论: GSH在治疗DKA时可明显降低氧化应激水平,对机体有保护作用。     

营养干预对骨髓移植病人抗氧化力及脂质过氧化的影响

目的：探讨外源性补充抗氧化性维生素对骨髓移植病人抗氧化力及脂质过氧化的影响。方法：将19名骨髓移植病人随机分为实验和对照组，实验组在预处理前给予维生素C（300mg/d)和维生素E（600mg/d），对照组不予补充，其余处理两者相同。测定移植前后两组病人的血浆总抗氧化力、丙二醛、全血谷胱甘肽过氧化物酶及红细胞超氧化物歧化酶水平。结果：（1）移植 前后实验组血浆总抗 氧化力、谷胱甘肽过氧化物酶和红细胞超氧化物歧化酶值一直处于正常或正常值附近，对照组则低于 正常值，两组相比有显著差异；（2）移植后实验组丙二醛值很快降至正常，对照组则一直处于较高水平，两组有显著差异。结论；移植前外源性补充抗氧化性维生素可提高骨髓移植病人机体的抗氧化力，减少了脂质过氧化物的产生，有效缓解移植前大剂量放、化疗对病人机体造成的氧化胁迫压力。     

营养干预对骨髓移植病人抗氧化力及脂质过氧化的影响

目的探讨外源性补充抗氧化性维生素对骨髓移植病人抗氧化力及脂质过氧化的影响。方法将19名骨髓移植病人随机分为实验和对照组,实验组在预处理前给予维生素C(300 mg/d)和维生素E(600 mg/d),对照组不予补充,其余处理两者相同。测定移植前后两组病人的血浆总抗氧化力、丙二醛、全血谷胱甘肽过氧化物酶及红细胞超氧化物歧化酶水平。结果(1)移植前后实验组血浆总抗氧化力、谷胱甘肽过氧化物酶和红细胞超氧化物歧化酶值一直处于正常或正常值附近,对照组则低于正常值,两组相比有显著差异;(2)移植后实验组丙二醛值很快降至正常,对照组则一直处于较高水平,两组有显著差异。结论移植前外源性补充抗氧化性维生素可提高骨髓移植病人机体的抗氧化力,减少了脂质过氧化物的产生,有效缓解移植前大剂量放、化疗对病人机体造成的高氧化胁迫压力。     

Renal tubular function in patients with beta-thalassaemia major in Zahedan, southeast Iran

INTRODUCTION: In patients with beta-thalassaemia major, impaired biosynthesis of the beta-globin leads to accumulation of unpaired alpha-globin chain. Shortened red cell lifespan and iron overload cause functional and physiological abnormalities in various organ systems. Thus, in patients with beta-thalassaemia major, the most important cause of mortality and morbidity is organ failure due to deposits of iron. The aim of this study is to investigate renal tubular and glomerular functions in patients with beta-thalassaemia major. METHODS: 166 subjects with beta-thalassaemia major (96 male, 70 female) were enrolled in the study. Fasting blood and 24-hour urine samples were obtained for haematological and biochemical analyses. RESULTS: Patients with beta-thalassaemia major showed significant signs of renal tubulopathy, such as hypercalciuria (12.9 percent), proteinuria (8.6 percent), phosphaturia (9.2 percent), magnesiumuria (8.6 percent), hyperuricosuria (38 percent) and excretion of beta-2 microglobin (13.5 percent). We found that 95.1 percent of patients had iron overload (ferritin more than 1,000 ng/ml). CONCLUSION: The determination of biochemical indices of renal function might help prevention of serious kidney damage before any clinical symptom is observed. Beta-thalassaemia patients present multiple renal abnormalities which may be due to iron overload. We suggest the appropriate chelation therapy and regular monitoring of the status of iron overload.     

间歇性缺氧时结肠癌细胞的晚期氧化蛋白产物与血管内皮生长因子、转化生长因子β1的关系

摘要：目的研究间歇性缺氧时结肠癌SW480细胞其晚期氧化蛋白产物（AOPP）的水平和其他氧化应激指标的关系,以及
与血管内皮生长因子（VEGF）、转化生长因子β1（TGFβ1）的相关性。方法建立细胞缺氧模型,SW480细胞按缺氧条件的
不同分为：间歇性缺氧组（A组）、持续性缺氧组（B组）、常氧对照组（C组）。采用ELISA方法检测AOPP和VEGF,黄嘌呤
羟胺法测定超氧化物岐化酶（SOD）,分光光度法测定丙二醛（MDA）、谷胱甘肽过氧化物酶（GSH-PX）,用免疫荧光染色方
法及Western blok 方法测定TGFβ1的表达。结果①与对照组C组比较,A组和B组的AOPP、MDA均升高（P 均<0.05）;
SOD、GSH-PX下降（P均<0.05）。A组与B组比较时两者的差异也具有统计学意义（P均<0.05）,间歇性缺氧较持续缺氧
时AOPP、MDA明显升高,SOD、GAH-PX显著下降（P均<0.05）。②间歇性缺氧时AOPP水平与MDA、VEGF、TGFβ1呈正
相关（P均<0.05）,与SOD为负相关关系（P均<0.05）,而与GSH-PX无明显相关性。结论间歇性缺氧时SW480细胞的蛋
白氧化损伤增强,较持续缺氧时明显,并且与氧化应激状态有关。缺氧时血管生成因子VEGF和TGFβ1均表达,以间歇性
缺氧时显著,且其表达与AOPP水平密切相关。
     

早期糖尿病大鼠骨骼肌组织氧化应激的研究

目的:研究早期四氧嘧啶糖尿病大鼠骨骼肌组织的氧化应激状态.方法:SD大鼠随机分为正常对照组和糖尿病组,四氧嘧啶(200mg/kg)诱导糖尿病大鼠模型14d后,检测2组大鼠血糖、血脂及骨骼肌组织中丙二醛(MDA)、一氧化氮(NO)含量和超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)活性的变化.结果:与正常对照组大鼠比较,糖尿病组大鼠出现了明显的糖脂代谢异常,骨骼肌组织中MDA和NO含量显著升高(均P<0.01),而SOD和GSH-Px活性也显著上升(均P<0.01).结论:早期四氧嘧啶糖尿病大鼠骨骼肌组织处于明显的氧化应激状态,提示氧化应激可能在糖尿病及其并发症的发生、发展中起重要作用.     

静脉补铁联合还原性谷胱甘肽对维持性血液透析患者氧化应激的影响

目的 观察维持性血液透析(MHD)患者在静脉补铁治疗肾性贫血的过程中,联合应用还原性谷胱甘肽(GSH)对体内氧化应激(OS)的影响.方法 选择MHD患者40例,随机分为静脉补铁组(Fe组)20例,静脉补铁联合GSH组(Fe+GSH组)20例,治疗8周后观察用药前后血红蛋白(Hb)、红细胞比容(Hct)、血清铁蛋白(SF)、转铁蛋白饱和度(TAST)以及血浆中丙二醛(MDA)、过氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-px)等指标的变化.结果 治疗8周后,Fe组和Fe+GSH组Hb,Hct水平均较治疗前明显升高(P<0.01),与Fe组相比,Fe+GSH组Hb、Hct水平改善明显,差异有统计学意义(P<0.05);治疗8周后Fe组和Fe+GSH组SF与TAST水平较治疗前显著增高(P<0.01),Fe组和Fe+GSH组之间比较,差异无统计学意义(P>0.05);治疗8周后,Fe组MDA较治疗前显著升高(P<0.05),SOD、GSH-px显著下降(P<0.05),而Fe+GSH组各项氧化应激指标较治疗前无明显改变(P>0.05),Fe组和Fe+GSH组之间比较,差异有统计学意义(P<0.05).结论 静脉补铁可有效改善MHD患者贫血及缺铁,但也加剧了患者体内的氧化应激状态,联合应用GSH可有效抑制患者体内氧化应激状态.     

Lead Induced Oxidative Stress： Beneficial Effects of Kombucha Tea

Objective To evaluate the effect of oral administration of Kombucha tea (K-tea) on lead induced oxidative stress. Methods Sprague Dawley rats were administered 1mL of 3.8% lead acetate solution daily alone or in combination with K-tea orally for 45d, and the antioxidant status and lipid peroxidation were evaluated. Results Oral administration of lead acetate to rats enhanced lipid peroxidation and release of creatine phosphokinase and decreased levels of reduced glutathione (GSH) and andoxidant enzymes (superoxide dismutase, SOD and glutathione peroxidase, GPx). Lead treatment did not alter humoral immunity, but inhibited DTH response when compared to the control.Lead administration also increased DNA fragmentation in liver. Oral administration of Kombucha tea to rats exposed to lead decreased lipid peroxidation and DNA damage with a concomitant increase in the reduced glutathione level and GPx activity. Kombucha tea supplementation relieved the lead induced immunosuppression to appreciable levels. Conclusion The results suggest that K-tea has potent antioxidant and immunomodulating properties.     

Ameliorative effect of zinc oxide and silver nanoparticles on antioxidant system in the brain of diabetic rats

Objective: To test the ability of both zinc oxide nanoparticles(Zn ONPs) and silver nanoparticles(SNPs) to ameliorate the oxidative stress resulted from diabetes in diabetic rats.Methods: Fifty male albino rats were used; ten of them were served as control group and forty, as the experiment group, were injected with streptozotocin at the single intraperitoneal dose of 100 mg/kg. Then, the experiment group was subdivided into, diabetic,diabetic + Zn ONPs, diabetic + SNPs and diabetic + insulin groups. The activities and m RNA expression levels of superoxide dismutase, catalase, glutathione peroxidase and glutathione reductase were determined in brain tissues. Malondialdehyde, total antioxidant capacity, zinc and silver concentrations were estimated in the brain tissues of all rats.Results: A significant increase in the activities and m RNA expression levels of superoxide dismutase, catalase, glutathione peroxidase and glutathione reductase was shown.Malondialdehyde levels were significantly decreased while there was a significant increase in the zinc, silver concentrations and total antioxidant capacity in brain of Zn ONPs and SNPs treated rats, compared with diabetic or diabetic + insulin group and their control group.Conclusions: Zn ONPs and SNPs can be used to ameliorate the oxidative stress in brain resulted from diabetes mellitus.     

左-卡尼汀对终末期肾病患者微炎症和氧化应激状态的影响

目的探讨左-卡尼汀对终末期肾病（ESRD）患者微炎症和氧化应激状态的影响。方法选择住院及长期门诊治疗的ESRD患者62例,分为血液透析组、保守治疗组,二组又各自分为左-卡尼汀组和对照组两个亚组,另设15例体检正常者为健康对照组,左-卡尼汀组给予静脉注射左-卡尼汀1．0g,3次／周,进行为期6月的随访,分别于人选初、3、6月后测定微炎症指标：高敏C反应蛋白（hs—CRP）、白介素-6（IL-6）;氧化应激指标：丙二醛（MDA）、血浆谷胱甘肽过氧化物酶（GSH—Px）。结果血液透析组、保守治疗组患者hs—CRP、IL-6和MDA水平高于健康对照组,GSH—Px低于健康对照组（P〈0．01）;血液透析组患者hs—CRP水平高于保守治疗组患者,GSH—Px低于保守治疗组患者（P〈0．05）;左-卡尼汀治疗后与治疗前比较hs,CRP、IL-6和MDA水平降低,GSH．Px水平升高fP〈0．05）。结论ESRD患者均存在一定程度的微炎症及氧化应激状态增强,左-卡尼汀可明显改善微炎症及氧化应激状态。     

针药并用治疗糖尿病肾病脾肾气虚兼痰瘀证临床研究

目的:观察针药并用对糖尿病肾病脾肾气虚挟痰瘀证患者氧化应激水平的影响。方法:116例糖尿病肾病脾肾气虚挟痰瘀证患者按照随机数字表法分为对照组和观察组各58例。对照组患者给予厄贝沙坦片口服,观察组给予针药综合疗法,1周为1个疗程,两组均连续治疗8个疗程。比较两组患者临床疗效,观察患者治疗前后血糖、血脂及肾功能各指标水平变化,检测治疗前后患者血清超氧化物歧化酶(superoxide dismutase,SOD)、晚期糖基化终末产物(advanced glycosylation end products,AGE)、晚期氧化蛋白产物(advanced oxidation protein products,AOPP)、丙二醛(malondialdehyde,MDA)水平变化。结果:观察组的有效率为91.3%高于对照组的75.9%(χ2=5.098,P0.05)。治疗后,观察组患者的血糖、血脂及肾功能改善优于对照组,其各指标水平显著低于对照组患者(P0.05);观察组患者经治疗后SOD活性显著高于对照组患者,而AGE、AOPP、MDA水平则显著低于对照组患者(P0.05)。结论:针药并用治疗糖尿病肾病患者疗效肯定,利于改善患者的糖脂代谢,提高肾功能,其机制与增强SOD活性、清除AGE、AOPP、MDA以减轻患者的氧化应激损伤有关。     

The development of diabetes mellitus and chronic liver disease in long term chelated beta thalassaemic patients

We studied 29 patients with thalassaemia major who had received intensive chelation for between 6.2 and 8.8 years. All patients had normal oral glucose tolerance tests before subcutaneous chelation therapy was introduced and 22 of 29 patients had normal liver function tests. At the end of the period of study 12 patients still had normal oral glucose tolerance (7 with normal liver function tests and 5 with chronic active hepatitis). On the other hand, 11 patients had developed impaired glucose tolerance tests (3 patients had normal liver function tests, 5 with chronic active hepatitis and 3 with cirrhosis), and 6 patients had developed frank diabetes mellitus (one with chronic active hepatitis and 5 with cirrhosis). Patients with chronic active hepatitis showed 91% positivity for one or more hepatitis B markers whilst all patients with cirrhosis were positive. Ferritin levels before subcutaneous chelation in patients with normal oral glucose tolerance tests were lower than in those patients with abnormal oral glucose tolerance or diabetes (P less than 0.05) but none had normal serum ferritin levels. In addition, a positive correlation was found between glucose area under the curve after chelation therapy and serum ferritin levels (r = 0.47, P less than 0.01). It is apparent that long term chelation therapy does not prevent the development of abnormal oral glucose tolerance in chronically transfused patients. More intensive chelation therapy is needed to prevent tissue damage. Chronic liver disease may have an important role to play in the deterioration of glucose tolerance.     

肿瘤患者铁营养状况研究

目的 观察肿瘤与体内铁营养状况之间的关系，并初步探讨其联系机制。方法 选取初次就诊的肿瘤患者105例，检测血清铁营养状况（铁蛋白、血清铁、总铁结合力、转铁蛋白饱和度）、抗氧化酶活性（T-SOD，GSH-PX）和脂质过氧化物（MDA）浓度。结果 与对照组比较：肿瘤组SI，TIBC，TS和MDA降低，T-SOD升高，GSH-Px差别无显著性。结论 铁营养状况的变化与肿瘤相关，铁对机体的氧化应激状况的影响可能是其与肿瘤相联赞系的关键环节。     

白藜芦醇对糖尿病大鼠肾脏内氧化应激的影响

目的：观察白藜芦醇对糖尿病大鼠肾脏内氧化应激（OS）的影响。方法：将实验动物分为正常对照组、糖尿病组、白藜芦醇治疗组。建立糖尿病大鼠模型,检测各组成模12周后肾组织中丙二醛（MDA）含量、铜,锌-超氧化物歧化酶（Cu,Zn-SOD）、谷光甘肽过氧化酶（GSH-Px）活性,同时观察肾功能、尿蛋白和肾脏形态。结果：与糖尿病组相比,白藜芦醇治疗组肾脏MDA含量明显下降,而肾脏抗氧化酶活性（Cu,Zn-SOD、GSH-PX）则显著上升,肾功能和肾脏形态均明显改善,尿蛋白下降。结论：氧化应激在2型糖尿病肾脏损害过程中发生了重要作用;白藜芦醇通过抑制氧化应激达到了其对该模型大鼠肾脏的保护作用。     

鲨鱼肝蛋白粗提物对大鼠肝线粒体抗氧化功能的影响

摘以400mg／kg2次腹腔注射硫代乙酰胺（TAA）建立大鼠急性肝损伤模型，并在注射TAA前1h以80mg／kg2次腹腔注射鲨鱼肝蛋白粗提物进行预防，研究了鲨鱼肝蛋白粗提物对大鼠肝线粒体抗氧化功能的影响。注射TAA后，大鼠肝脏线粒体腺苷二磷酸（ADP）诱导的氧消耗、呼吸控制率（RCR）、磷／氧比（P／O）、氧化磷酸化率均低于对照组，而预防组线粒体ADP诱导的氧消耗、呼吸控制率、P／O和氧化磷酸化效率均高于模型组；TAA降低了线粒体中谷胱甘肽、谷胱甘肽还原酶、谷胱甘肽过氧化物酶的水平，而鲨鱼肝蛋白粗提物则使线粒体中谷胱甘肽过氧化物酶和超氧化物歧化酶的水平明显升高，说明鲨鱼肝蛋白粗提物能部分修复线粒体受损的呼吸功能，增强线粒体抗氧化能力。     

Tamarind seed coat extract restores reactive oxygen species through attenuation of glutathione level and antioxidant enzyme expression in human skin fibroblasts in response to oxidative stress

ObjectiveTo investigate the role and mechanism of tamarind seed coat extract (TSCE) on normal human skin fibroblast CCD-1064Sk cells under normal and oxidative stress conditions induced by hydrogen peroxide (H₂O₂).MethodsTamarind seed coats were extracted with boiling water and then partitioned with ethyl acetate before the cell analysis. Effect of TSCE on intracellular reactive oxygen species (ROS), glutathione (GSH) level, antioxidant enzymes such as superoxide dismutase (SOD), glutathione peroxidase (GPx) and catalase activity including antioxidant protein expression was investigated.ResultsTSCE significantly attenuated intracellular ROS in the absence and presence of H₂O₂ by increasing GSH level. In the absence of H₂O₂, TSCE significantly enhanced SOD and catalase activity but did not affected on GPx. Meanwhile, TSCE significantly increased the protein expression of SOD and GPx in H₂O₂-treated cells.ConclusionsTSCE exhibited antioxidant activities by scavenging ROS, attenuating GSH level that could protect human skin fibroblast cells from oxidative stress. Our results highlight the antioxidant mechanism of tamarind seed coat through an antioxidant enzyme system, the extract potentially benefits for health food and cosmeceutical application of tamarind seed coat.     

Alteration of lipid peroxidation and antioxidant enzymes in young Malaysian IDDM patients

The present study was designed to explore the relationship between lipid peroxidation and antioxidant enzymes in young Malaysian insulin dependant diabetes mellitus (IDDM) patients. Indicative parameters of lipid peroxidation, activities of antioxidant enzymes and diabetes parameters were evaluated in single blood samples from 30 young type 1 diabetic patients and 30 healthy control subjects. Antioxidant enzymes namely superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx) were significantly decreased while plasma malondialdehyde (MDA), an indicator for lipid peroxidation was significantly increased in IDDM patients compared to control subjects. Positive correlations between HbA1c and MDA; fasting blood glucose (FBG) and MDA and negative correlations between HbA1c and SOD; MDA and SOD were observed in these patients. No significant correlation existed between HbA1c and fasting blood glucose, GPx or CAT in the diabetic patients. The strong correlations found between lipid peroxidation, antioxidant enzymes and diabetes parameters confirms the existence of oxidative stress in our IDDM patients.